getting lots of  kernel: martian source errors in my message log

Posted on 2010-01-04
Last Modified: 2012-05-08
I have a linux box that is getting lots of errors ( i assume they are errors) in the message log file

they all come from one source
Jan  4 11:29:54 millhouse kernel: martian source from, on dev eth1
Jan  4 11:29:54 millhouse kernel: ll header: ff:ff:ff:ff:ff:ff:00:xx:xx:xx:xx:xx:xx:xx

any help on how to debug this?

Question by:paries
    1 Comment
    LVL 18

    Accepted Solution

    The error is telling you that an external IP is reporting itself as an rfc1918 type address i.e. which is not routable so cannot possibly be honest - i.e. it's being spoofed (from Mars or another planet...).  
    I think the error comes from iptables, and you may be able to disable it in your iptables config

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